Patents by Inventor Toru Kurihashi
Toru Kurihashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170145150Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical3 sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.Type: ApplicationFiled: February 8, 2017Publication date: May 25, 2017Inventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Patent number: 9493631Abstract: A cured product obtainable by impregnating a glass cloth with an epoxy resin composition that is suitable for producing optical sheets. The epoxy resin composition includes a polyvalent carboxylic acid (A) represented by formula (I): wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule. The cured product has a refractive index at 25° C. of 1.51 or higher.Type: GrantFiled: December 3, 2015Date of Patent: November 15, 2016Assignee: Nippon Kayaku Kabushiki KaishaInventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Patent number: 9493630Abstract: A cured product obtainable by curing an epoxy resin composition that is suitable for producing optical sheets. The epoxy resin composition includes a polyvalent carboxylic acid (A) represented by formula (I): wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule.Type: GrantFiled: December 3, 2015Date of Patent: November 15, 2016Assignee: Nippon Kayaku Kabushiki KaishaInventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Patent number: 9328217Abstract: An epoxy resin composition for optical sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): wherein R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule.Type: GrantFiled: November 15, 2011Date of Patent: May 3, 2016Assignee: Nippon Kayaku Kabushiki KaishaInventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Publication number: 20160090440Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.Type: ApplicationFiled: December 3, 2015Publication date: March 31, 2016Inventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Publication number: 20160083615Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical 3 sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Inventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Publication number: 20160083576Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Inventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Publication number: 20130323994Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical3 sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.Type: ApplicationFiled: November 15, 2011Publication date: December 5, 2013Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Noriko Kiyoyanagi, Masataka Nakanishi, Yoshihiro Kawata, Junko Ichikawa, Toru Kurihashi
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Patent number: 8198381Abstract: Disclosed is a phenol aralkyl epoxy resin having a structure wherein at least a phenol or a naphthol is bound by using an aralkyl group as a linking group and a structure represented by formula (1) below, while satisfying the condition 1 below. This epoxy resin is excellent in workability during production of a composition and is easy to control quality. Condition 1: The following relation (?) is satisfied with A being the hydroxyl equivalent (as measured in accordance with JIS K 0070) of a phenol-modified epoxy resin obtained by adding an equivalent molar amount of phenol relative to the epoxy equivalent of the epoxy resin, and B being the epoxy equivalent of the epoxy resin. 50?1000×(A?B)/B?250 (?).Type: GrantFiled: October 16, 2006Date of Patent: June 12, 2012Assignee: Nippon Kayaku Kabushiki KaishaInventors: Masataka Nakanishi, Katsuhiko Oshimi, Kazuyuki Ohhashi, Toru Kurihashi
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Patent number: 7884172Abstract: To provide an epoxy resin giving a cured object having high heat resistance, which is improved in impact resistance and moisture resistance as compared with conventional high-heat-resistance epoxy resins. The epoxy resin is obtained by glycidylating one or more phenol compounds comprising 95% or more 1,1,2,2-tetrakis (hydroxyphenyl)ethane, and is characterized in that in an examination by gel permeation chromatography, the epoxy resin has a tetranucleus-form content of 50 to 90% by area and an octanucleus-form content of at least 5% by area and has a total chlorine content of 5,000 ppm or smaller.Type: GrantFiled: October 10, 2006Date of Patent: February 8, 2011Assignee: Nippon Kayaku Kabushiki KaishaInventors: Masataka Nakanishi, Katsuhiko Oshimi, Ryutaro Tanaka, Toru Kurihashi
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Patent number: 7781147Abstract: [PROBLEMS] To provide a photosensitive resin composition which has excellent photosensitivity and gives a cured product reduced in warpage and excellent in flexing properties, adhesion, pencil hardness, solvent resistance, acid resistance, heat resistance, resistance to gold plating, etc. [MEANS FOR SOLVING PROBLEMS] A urethane resin (A) soluble in aqueous alkali solutions and curable with active energy rays which is obtained by reacting a diisocyanate compound (a) with a tetrabasic acid dianhydride (b) to obtain a compound (E), reacting the compound (E) with a hydroxylated compound (c) having an unsaturated group and optionally with a hydroxylated compound (d) other than the compound (c) to obtain a compound (F), and further reacting hydroxy groups of the compound (F) with a diisocyanate compound (e).Type: GrantFiled: October 5, 2006Date of Patent: August 24, 2010Assignee: Nippon Kayaku Kabushiki KaishaInventors: Ryutaro Tanaka, Toru Kurihashi
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Publication number: 20090131607Abstract: [Problems] To provide an epoxy resin giving a cured object having high heat resistance, which is improved in impact resistance and moisture resistance as compared with conventional high-heat-resistance epoxy resins. [Means for Solving Problems] The epoxy resin is obtained by glycidylating one or more phenol compounds comprising 95% or more 1,1,2,2-tetrakis(hydroxyphenyl)ethane, and is characterized in that in an examination by gel permeation chromatography, the epoxy resin has a tetranucleus-form content of 50 to 90% by area and an octanucleus-form content of at least 5% by area and has a total chlorine content of 5,000 ppm or smaller.Type: ApplicationFiled: October 10, 2006Publication date: May 21, 2009Inventors: Masataka Nakanishi, Katsuhiko Oshimi, Ryutaro Tanaka, Toru Kurihashi
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Publication number: 20090117388Abstract: Disclosed is a phenol aralkyl epoxy resin having a structure wherein at least a phenol or a naphthol is bound by using an aralkyl group as a linking group and a structure represented by formula (1) below, while satisfying the condition 1 below. This epoxy resin is excellent in workability during production of a composition and is easy to control quality. Condition 1: The following relation (?) is satisfied with A being the hydroxyl equivalent (as measured in accordance with JIS K 0070) of a phenol-modified epoxy resin obtained by adding an equivalent molar amount of phenol relative to the epoxy equivalent of the epoxy resin, and B being the epoxy equivalent of the epoxy resin.Type: ApplicationFiled: October 16, 2006Publication date: May 7, 2009Inventors: Masataka Nakanishi, Katsuhiko Oshimi, Kazuyuki Ohhashi, Toru Kurihashi
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Publication number: 20090042126Abstract: A photosensitive resin composition which is excellent in photosensitivity and excellent in flame resistance, flexibility, adhesiveness, pencil hardness, resistance to solvent, acid resistance, heat resistance, resistance to gold plating and the like and a cured article thereof are provided. An alkaline aqueous solution-soluble photosensitive resin composition containing an alkaline aqueous solution-soluble resin (A) obtained by adding a polybasic acid anhydride (c) to a resin (C) which is a reaction product of an epoxy resin (a) represented by the formula (1) with an unsaturated monocarboxylic acid (b), an epoxy resin (a?) represented by the formula (1) as a curing agent (B) and a photopolymerization initiator. [In the formula, n represents a positive number of 1 to 10 as an average value.Type: ApplicationFiled: July 20, 2006Publication date: February 12, 2009Inventors: Ryutaro Tanaka, Toru Kurihashi, Hiroo Koyanagi
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Publication number: 20080268373Abstract: [PROBLEMS] To provide a photosensitive resin composition which has excellent photosensitivity and gives a cured product reduced in warpage and excellent in flexing properties, adhesion, pencil hardness, solvent resistance, acid resistance, heat resistance, resistance to gold plating, etc. [MEANS FOR SOLVING PROBLEMS] A urethane resin (A) soluble in aqueous alkali solutions and curable with active energy rays which is obtained by reacting a diisocyanate compound (a) with a tetrabasic acid dianhydride (b) to obtain a compound (E), reacting the compound (E) with a hydroxylated compound (c) having an unsaturated group and optionally with a hydroxylated compound (d) other than the compound (c) to obtain a compound (F), and further reacting hydroxy groups of the compound (F) with a diisocyanate compound (e).Type: ApplicationFiled: October 5, 2006Publication date: October 30, 2008Inventors: Ryutaro Tanaka, Toru Kurihashi
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Publication number: 20040116643Abstract: This invention discloses a composite resin prepared by reacting a monool (a) containing a C25-200 hydrocarbon group; a multifunctional compound (G) containing a functional group capable of reacting with a hydroxyl group of the monool (a) and a compound (H) having a functional group capable of reacting with the functional group in the multifunctional compound (G) as well as uses thereof. The composite resin of the invention serves as an excellent interface modifier upon incorporation into a film-coating material such as ink or paint or into a molding material. The modifier can modify not only the interface between the film-forming material or the like and a base material but also the surface of the film-forming material, that is, the interface between the film-forming material and the air.Type: ApplicationFiled: September 30, 2003Publication date: June 17, 2004Inventors: Toru Kurihashi, Koujirou Takamori
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Patent number: 6504163Abstract: A process of accelerating electrons with a voltage applied thereto in a vacuum, guiding the accelerated electrons into a normal-pressure atmosphere, and irradiating the electron beam (EB) onto an object. The electron beam irradiation process uses a vacuum tube-type electron beam irradiation apparatus, and with the acceleration voltage for generating an electron beam set at a value smaller than 100 kV, the electron beam is irradiated onto the object.Type: GrantFiled: December 6, 2000Date of Patent: January 7, 2003Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Michio Takayama, Masami Kuwahara, Takeshi Hirose, Toru Kurihashi, Masayoshi Matsumoto
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Publication number: 20020139939Abstract: A process of accelerating electrons with a voltage applied thereto in a vacuum, guiding the accelerated electrons into a normal-pressure atmosphere, and irradiating the electron beam (EB) onto an object. The electron beam irradiation process uses a vacuum tube-type electron beam irradiation apparatus, and with the acceleration voltage for generating an electron beam set at a value smaller than 100 kV, the electron beam is irradiated onto the object.Type: ApplicationFiled: December 6, 2000Publication date: October 3, 2002Applicant: TOYO INK MANUFACTURING CO., LTD.Inventors: Michio Takayama, Masami Kuwahara, Takeshi Hirose, Toru Kurihashi, Masayoshi Matsumoto
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Patent number: 6188075Abstract: A process of accelerating electrons with a voltage applied thereto in a vacuum, guiding the accelerated electrons into a normal-pressure atmosphere, and irradiating the electron beam (EB) onto an object. The electron beam irradiation process uses a vacuum tube-type electron beam irradiation apparatus, and with the acceleration voltage for generating an electron beam set at a value smaller than 100 kV, the electron beam is irradiated onto the object.Type: GrantFiled: April 23, 1998Date of Patent: February 13, 2001Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Michio Takayama, Masami Kuwahara, Takeshi Hirose, Toru Kurihashi, Masayoshi Matsumoto
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Patent number: 5705602Abstract: A star-like or comb-like branched aliphatic polyamino compound for use as a basic catalyst or a curing agent, as an effective thixotropic agent or viscosity adjusting agent for an aqueous medium, as a component for any one of a coating-forming agent, a sealing agent, a molding material and an adhesive resin, or as a substantially solvent-free coating composition, molding material or adhesive resin. The process for the production of the above compound comprises (a) forming an adduct of ammonia or an aliphatic amino compound having an amino group (compound A) with methyl acrylate, adding an alkylenediamine having 2 to 12 carbon atoms to the adduct to carry out an ester-amide exchange reaction (b), thereby obtaining a polyamino compound (B) having a total of 2 to 100 aliphatic primary amino and secondary amino groups per molecule and having a number average molecular weight of 170 to 10,000, and forming an adduct of the polyamino compound (B) with an acrylic acid ester (C) of the formula (1),CH.sub.2 =CHCOO--R.Type: GrantFiled: February 19, 1997Date of Patent: January 6, 1998Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Miki Kawashima, Takeo Yamaguchi, Toru Kurihashi, Norifumi Watanabe